Groco BB Backing Block for Flanged Seacock
Groco BB Backing Block for Flanged Seacock
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Groco BB Backing Block for Flanged Seacock

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Key item features


Groco BB Backing Block for Flanged Seacock:
  • Installation is improved with the use of a backing block between the valve flange and the hull
  • Each size fits multiple seacock sizes
  • Press threaded inserts into the hull side of the backing block into the holes that match the seacock flange
  • 1/2" thickness is rigid enough for a secure installation
  • Flexible enough to conform to minor hull curvature
  • Will not swell or absorb moisture
  • Bolt: 5/16" - 18"
  • Fits: 3/4" and 1" seacocks
Current price is $76.19
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  • Free shipping
  • Free 30-day returns

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Arrives by Sat, Jun 20
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Sold and shipped by Boating Store
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